Update OWNERS file

Remove Xoogler zachoverflow

Test: TreeHugger
Change-Id: Idcb94505b7ae841f660d0b8c75180501bef16324
diff --git a/OWNERS b/OWNERS
index 4983519..38550c1 100644
--- a/OWNERS
+++ b/OWNERS
@@ -2,4 +2,3 @@
 
 sattiraju@google.com
 siyuanh@google.com
-zachoverflow@google.com